The Valve Assembly, cataloged under National Stock Number 4820-01-677-1759, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Piping Specialties, Inc. Dba Piping Specialties Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve Assembly |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Piping Specialties, Inc. Dba Piping Specialties Inc (CAGE 8X997) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-677-1759 |
| Primary Part Number | PEN 21545D REV C |
| Item Name | Valve Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Piping Specialties, Inc. Dba Piping Specialties Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| PEN 21545D REV C | Piping Specialties, Inc. Dba Piping Specialties Inc (USA) |
| Reference | Meaning |
|---|---|
| 21545D REV C | D/9 Drawing number reference only U.S. Government activity |
| 62868-090 | 3/2 Design control — primary reference U.S. Government activity |
| 8740835 ITEM F-1 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4820-01-677-1759 is a Valve Assembly, manufactured by Piping Specialties, Inc. Dba Piping Specialties Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-677-1759 has 1 manufacturer part number on file: PEN 21545D REV C (Piping Specialties, Inc. Dba Piping Specialties Inc).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.